Anterior Shoulder and Arm Muscle Actions

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PT605 Anatomy, Oregon Tech

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14 Terms

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Serratus Anterior

Scapular depression, upward rotation, protraction, posterior tilt, and holds medial border of scapula against thorax.

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Anterior Deltoid

Shoulder abduction, flexion, internal rotation, horizontal adduction

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Middle Deltoid

Shoulder abduction

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Posterior Deltoid

Shoulder abduction, extension, external rotation, horizontal abduction

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Clavicular Head of Pectoralis Major

Shoulder horizontal adduction, internal rotation, adduction, flexion

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Sternal Head of Pectoralis Major

Shoulder horizontal adduction, internal rotation, adduction

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Costal Head of Pectoralis Major

Shoulder horizontal adduction, internal rotation, adduction, extension

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Pectoralis Minor

Scapular depression, downward rotation, protraction, anterior tilt

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Subclavius

Clavicular depression, protraction, anterior rotation

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Corachobrachialis

Shoulder flexion, adduction, internal rotation, horizontal adduction

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Biceps Brachii

Shoulder flexion, elbow flexion, forearm supination

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Brachialis

Elbow flexion

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Triceps Brachii

Elbow extension, shoulder extension (long head)

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Anconeus

Tightens capsule of elbow during elbow extension, weak elbow extension